Unit 8 We're trying to save the earth! 课件(共25张PPT)

(共25张PPT)
We're trying to save the earth!
活动一 ：谁是记忆大王
充满 2. 扔进 3. 在……起作用
4 扔掉 5. 减少 6. 有影响；
7. 导致 8. 切除 9. 不但 … 而且…
10. 对…有害 11.在……顶部 12.参加
13.关掉 14.付费；付出代价
15.采取行 16.好好利用 17.拆下， 摧毁
18.以…出名 19.回复，使想起 20.上下颠倒
1. 充满
2. 扔进
3. 在……起作用
4. 扔掉
5. 减少
6. 起作用；有影响
7. 导致
8. 切除
9. 不但……而且……
10. 对……有害
be full of
throw…into
play a part in
throw away
cut down
make a difference
lead to
cut off
not only…but also…
be harmful to
11.在……顶部
12.参加
13.关掉
14.付费；付出代价
15.采取行动
16.好好利用
17.拆下， 摧毁
18以…出名
19.回复，使想起
20.上下颠倒
11.at the top of
12.take part in
13.turn off
14. pay for
15.take action
16.put sth. to good use
17.pull ... down
18.be known for
19.bring back
20.upside down
活动二：头脑风暴
1.我们正在努力拯救地球。
2.这条河过去很干净。
3.空气被污染的很厉害。
4.到现在为止，没有研究表明鲨鱼鳍对健康有好处。
5.人们正在往河里扔垃圾。
6.对于每个人来说，记住把垃圾扔进垃圾桶并保持公共场所的干净和美丽。
7.城镇里的每个人应该参与到把他打扫干净的行列中。
8.因此，我们齐心协力就能带来变化，创造更加美好的未来。
9.为了减少污染，我们应该乘坐公交车或地铁代替开车。
10.当你离开房间时，你应该关上灯。
活动二：头脑风暴
1.We’re trying to save the earth.
2.The earth used to be so clean.
3.The air is badly polluted.
4.So far, no scientific studies have shown that shark fins are good for health.
5.People are throwing rubbish into the river.
6.Remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.
7.Everyone in this town should play a part in cleaning it up.
8.So together, our actions can make a difference and lead to a better future.
9.To cut down air pollution, we should take the bus or subway instead of driving.
10.You should turn off the lights when you leave a room.
活动三：看看谁是火眼金睛？
请同学们找出10个句子中包含的语法和词组
活动三：头脑风暴
现在进行时；
被动语态；
现在完成时；
used to do
活动四：复习回顾
现在进行时
（1）含义：表示正在发生或进行的动作。
（2）基本结构：
主语 + be + 现在分词（be 的形式随主语的变化而变化）
（3）基本用法：
①表示现在正在进行的动作。特征：常常与now或具体的时间连用，有时句中会有感官动词来提示，或通过上下文来暗示。
②表示现阶段一直进行的动作。这类动词常常是延续性动词。常于at present, this week, these days等连用。
③表示主语的特征、性格、能力等
活动三
现在完成时
（1）含义：表示过去发生的动作对现在还有影响。
（2）基本结构：主语 + have / has + 过去分词
（3）基本用法：
①表示过去发生的动作，但强调对现在产生影响。特征：不能与表示具体的时间状语连用。
②表示过去发生的动作或存在的状态一直延续到现在，还可能继续下去。常常与since, for, in the past + 时间名词，in the last +时间名词等时间状语连用，而且谓语动词要求是延续性动词。
③表示一种“经历或体验”，即可以表示经历过也可以是从来都没有经历过。
活动三：
被动语态
归纳如下
（1）一般现在时的被动语态：am / is / are + 过去分词
（2）一般过去时的被动语态：
was/were + 过去分词
（3）含有情态动词的被动式：
情态动词+be +动词的过去分词。
Don’t use paper napkins.
What can we do to help save the earth
Leave your car at home.
Take a bus or ride your bike to work.
Turn off the lights when you leave a room.
Turn off the shower while you are washing your hair.
recycle books and paper
Throw rubbish into the bins
To save the earth, what should you do
一. 根据汉语提示完成句子。
1. 我们必须采取行动来阻止他们。
We must _____ ______ to stop them.
2. 我从没听说过这个人。
I have never ____ ____ such a man.
3. 到目前为止，我已经交了二十个朋友。
____ ____, I have made twenty friends.
5. 实际上，她从没去过那儿。
____ ____, she has never been there.
In fact
take action
heard of
So far
Exercises
6. 她扔掉了昨天的报纸。
She _____ _____ yesterday’s newspaper.
7. 我在新的工作中充分地利用了我的经验。
I ___ my experience ___ ___ ___ in my new work.
8. 请别将杯子倒置。
Please don’t turn the cup _____ _____.
9. 这些照片唤起了我美好的回忆。
The photos ____ ____ lots of good memories.
10. 杭州以龙井茶而闻名。
Hangzhou is well ____ ____ its Longjing Tea.
known for
threw away
put to good use
upside down
bring back
1. (2014) It's getting dark. Please ________ the light.
A. turn on B. turn off
C. turn down D. turn around
2. (2014湖北随州)–How does Jack usually go to work
—He ______ drive a car, but now he ______ there to lose weight.
A. used to; is used to walk
B. was used to; is used to walking
C. was used to; is used to walk
D. used to; is used to walking
中考链接
3. (2013湖北宜昌)—At present, one of the best ways to study is working in groups.
—More chances _______ to students to learn from each other.
A. offer B. are offered
C. have offered D. are offering
4.Look! The police ______ the food ontothe bank of the river. 【2014宜宾】
am carrying B. is carrying
C. are carrying D. are carried
5.—Mr. Li will check our homework this afternoon. ______ you ______ it 【2014南昌】
—Not yet. I'm doing it right now.
A. Do; finish B. Had; finished
C. Will; finish D. Have; finished
6.I heard that Line I of Ningbo Subway ______ last month. 【2014宁波】
A. was tested B. is tested
C. tests D. tested
活动五：Make a survey!
A B C D
How to save the earth
What can we do
(调查问答流利得10分, 基本完成得6分)
Thank You!